package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {

    public String paymentInfo_Ok(Integer id){
        return "线程池: "+Thread.currentThread().getName()+"   paymentInfo_ok,id:  "+id+"\t"+"O(∩_∩)O哈哈";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties  ={
            @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })
    public String paymentInfo_TimeOut(Integer id){
        int timeNumber=5;
//        int age = 10/0;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池: "+Thread.currentThread().getName()+"   paymentInfo_timeout,id:  "+id+"\t"+"O(∩_∩)O哈哈,耗时(S)："+timeNumber;
    }

    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池: "+Thread.currentThread().getName()+"  8001系统繁忙或者运行报错，请稍后再试，id："+id+"\t"+"/(ㄒoㄒ)/~~";
    }

    //服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),   //是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),  //请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),    //时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),    //失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if(id < 0){
            throw new RuntimeException("******id 不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();  //UUID.randomUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号："+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能负数，请稍后再试，o(╥﹏╥)o  id："+id;
    }
}
